The impoverished status of the Templars did not last long. They had a powerful advocate in Saint Bernard of Clairvaux, a leading Church figure, the French abbot primarily responsible for the founding of the Cistercian Order of monks and a nephew of André de Montbard, one of the founding knights. Bernard put his weight behind them and wrote persuasively on their behalf in the letter 'In Praise of the New Knighthood', and in 1129, at the Council of Troyes, he led a group of leading churchmen to officially approve and endorse the order on behalf of the church. With this formal blessing, the Templars became a favoured charity throughout Christendom, receiving money, land, businesses, and noble-born sons from families who were eager to help with the fight in the Holy Land.

The Templars were organized as a monastic order similar to Bernard's Cistercian Order, which was considered the first effective international organization in Europe. The organizational structure had a strong chain of authority. Each country with a major Templar presence (France, Poitou, Anjou, Jerusalem, England, Spain, Portugal, Italy, Tripoli, Antioch, Hungary, and Croatia) had a Master of the Order for the Templars in that region.

There was a threefold division of the ranks of the Templars: the noble knights, the non-noble sergeants, and the chaplains. The Templars did not perform knighting ceremonies, so any knight wishing to become a Knight Templar had to be a knight already. They were the most visible branch of the order, and wore the famous white mantles to symbolize their purity and chastity. They were equipped as heavy cavalry, with three or four horses and one or two squires. Squires were generally not members of the order but were instead outsiders who were hired for a set period of time. Beneath the knights in the order and drawn from non-noble families were the sergeants. They brought vital skills and trades from blacksmiths and builders, including administration of many of the order's European properties. In the Crusader States, they fought alongside the knights as light cavalry with a single horse. Several of the order's most senior positions were reserved for sergeants, including the post of Commander of the Vault of Acre, who was the de facto Admiral of the Templar fleet. The sergeants wore black or brown. From 1139, chaplains constituted a third Templar class. They were ordained priests who cared for the Templars' spiritual needs. All three classes of brother wore the order's red cross.